bannerpics=new Array; 
bannerurls=new Array;

bannerpics[1]="http://img.danmarksnationalefront.dk/forum/banner/erikandsons.jpg"; 
bannerurls[1]="http://www.erik-and-sons.de/";

bannerpics[2]="http://img.danmarksnationalefront.dk/forum/banner/hvidevideoer.jpg"; 
bannerurls[2]="http://hvidevideoer.danmarksnationalefront.dk/"; 

function ShowBanner() {

num = Math.random();
num = 1 + ( num * ((bannerpics.length - 1)-1));
num = Math.round(num);

document.write("<a href='" + bannerurls[num] + "' target='_blank'>");
document.write("<img src='" + bannerpics[num] + "' border='0'");
document.write("alt='banner'>");
document.write("</a>");
}